http/tests/xmlhttprequest/access-control-basic-whitelist-request-headers.html

<html>
<body>
<pre id='console'></pre>
<script type="text/javascript">
    if (window.testRunner)
        testRunner.dumpAsText();

    function log(message)
    {
        document.getElementById('console').appendChild(document.createTextNode(message + "\n"));
    }

    try {
        var xhr = new XMLHttpRequest;
        xhr.open("POST", "http://localhost:8000/xmlhttprequest/resources/access-control-basic-whitelist-request-headers.cgi", false);
        xhr.setRequestHeader("Accept", "*");
        xhr.setRequestHeader("Accept-Language", "ru");
        xhr.setRequestHeader("Content-Language", "ru");
        xhr.setRequestHeader("Content-Type", "text/plain");
        xhr.send("");
    
        log(xhr.responseText);
    } catch (ex) {
        log("Unexpected exception: " + ex);
    }
</script>
</body>
</html>